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Arab Journal Of Nuclear Science And Applications, 46(2),(1-16) 2013 Fig. (6) Differential scanning calorimeter (DSC) of P-AAc/HEMA. vii. Scanning Electron Microscope (SEM): Scanning electron microscope of P-AAc/HEMA is investigated in figure. (7) from which it is concluded that the particle size of the material is 3-9 μm and slit like porosity with width equals 1 μm and 20 μm length. Fig. (7) Scanning electron microscope (SEM) of P-AAc/HEMA. Kinetic study Effect of initial metal ion concentration and shaking time on the adsorption. 6
Arab Journal Of Nuclear Science And Applications, 46(2),(1-16) 2013 i. Effect of Metal Ion Concentration on adsorption: The effect of metal ion concentration in the range from 10 -2 to 10 -4 M on sorption of metal ions, under study, by poly-acrylic acid/2-hydroxyethylene methacrylate (P-AAc/HEMA) from 0.01 M HNO3 medium, for 4 hours and V/m = 200 ml/g at room temperature was studied. The uptake decreases by increasing the metal ion concentration for Zn 2+ , Cd 2+ ,Co 2+ , Sr 2+ , Nd 3+ and Eu 3+ onto P- AAc/HEMA ions as shown in Figure (8). % uptake 90 85 80 75 70 65 60 55 50 45 40 35 0.000 0.002 0.004 0.006 0.008 0.010 C (M) Fig. (8) Effect of metal ion concentration on the % uptake in case of P-AAc/HEMA at room temperature. ii. Effect of Contact Time: The effect of contact time on the uptake of 10 -4 M Sr 2+ , Co 2+ , Cd 2+ , Zn 2+ , Nd 3+ and Eu 3+ by poly-acrylic acid/2-hydroxyethylene methacrylate (P-AAc/HEMA) as cation exchanger from aqueous solution of 0.01 M HNO3 has been investigated batchwisely at room temperature. The percent uptake increases sharply at the initial stages by increasing shaking time until the equilibrium is obtained, 91.51%, 85.3%, 78.8%, 77.9%, 75.41% and 74.6% for Eu 3+ Nd 3+ Sr 2+ , Co 2+ , Cd 2+ and Zn 2+ ions respectively as shown the figure (9) which illustrates that the time required for equilibrium is within 60 minutes. 7 Sr Nd Eu Co Cd Zn
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Page 9 and 10: % uptake % uptake % uptake 80 60 40
Page 11 and 12: log ( q e - q t ) log ( q e -q t )
Page 13 and 14: t/q, mint.g/mmol t/q, mint. g/mmol
Page 15 and 16: q, mmol/g q, mmol/g. q, mmol/g 0.01

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